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Create a Mapping Table for Binary Variables

Source: R/createBinaryMapping.R
createBinaryMapping.Rd

Identifies binary variables and returns a deterministic mapping for 0/1 coding.

  • Factors with explicit order (ordered = TRUE) do NOT use heuristics; the highest (last) level is Positive.

  • Logicals map to Negative = "FALSE", Positive = "TRUE".

  • Numeric 0/1 (or any 2-value numeric) maps Positive to the numeric maximum.

  • Characters / unordered factors use minimal heuristics (no race/PWH/sex terms).

Usage

createBinaryMapping(Data, CatVars, prefer = NULL)

Arguments

Data

A dataframe.

CatVars

Character vector of candidate binary variables.

prefer

Optional named character vector of explicit positive levels, e.g., c(STATUS = "PWH", Smoker = "Yes"). This overrides other rules.

Value

A data.frame with columns: Variable, Label, PositiveLevel, NegativeLevel.